[mythtv-users] New LCD TV - complains about 'mode not supported'
David Whyte
david.whyte at gmail.com
Wed Aug 6 10:04:35 UTC 2008
On Tue, Aug 5, 2008 at 11:04 PM, David Whyte <david.whyte at gmail.com> wrote:
>>
>
> Tried that just now but no luck.
>
> I can easily get 1360x768 using xrandr, but that suck not being done
> for you at boot-up.
>
> mythtv-user at mythFE-David:~$ xrandr -d :0 -q
> Screen 0: minimum 320 x 200, current 1360 x 768, maximum 1360 x 1360
> VGA disconnected (normal left inverted right)
> LVDS connected 1024x768+0+0 (normal left inverted right) 0mm x 0mm
> 1024x768 60.0*+ 85.0 75.0 70.1 60.0
> 832x624 74.6
> 800x600 85.1 72.2 75.0 60.3 56.2
> 640x480 85.0 72.8 75.0 59.9
> 720x400 85.0
> 640x400 85.1
> 640x350 85.1
> TMDS-1 connected 1360x768+0+0 (normal left inverted right) 160mm x 90mm
> 1360x768 60.0*+
> 1280x720 60.0
> 1024x768 60.0
> 800x600 60.3
> 640x480 60.0
> TV disconnected (normal left inverted right)
> mythtv-user at mythFE-David:~$
>
> I guess I just need to find that sweet spot to massage in my
> xorg.conf. Thanks for your response though.
>
Found the sweet spot.
It seems that the intel driver always assumes that the 915GM mobile
chip *always* has a laptop monitor connected, even when my miniPC does
not, hence the LVDS output above. That was forcing the TMDS-1 output
to be 1024x768 since the ghost LVDS couldn't support the higher
resolution I was specifying.
A bug report for Ubuntu showed my the fix
(https://bugs.launchpad.net/ubuntu/hardy/+source/xserver-xorg-video-intel/+bug/233787)
and the relevant config in my xorg.conf is now
Section "Device"
Identifier "Intel Corporation Mobile 915GM/GMS/910GML Express Grap$
Driver "intel"
BusID "PCI:0:2:0"
Option "UseFBDev" "true"
# This is one of the important lines.
Option "monitor-LVDS" "LVDS"
EndSection
Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
HorizSync 28-64
VertRefresh 43-60
Modeline "640x480_60.00" 23.86 640 656 720 800 480 481 484 49$
ModeLine "1360x768_60.00" 84.72 1360 1424 1568 1776 768 769 77$
EndSection
# Specify here that we want the LVDS monitor to be ignored.
Section "Monitor"
Identifier "LVDS"
Option "Ignore" "True"
EndSection
Section "Screen"
Identifier "Default Screen"
Device "Intel Corporation Mobile 915GM/GMS/910GML Express Grap$
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Modes "1360x768_60.00" "640x480_60.00"
EndSubSection
EndSection
Thanks for everyones help,
Whytey
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